Coal production
0reported short tons
ALL STATUSES / CONTROLLER PORTFOLIO
Imerys S A
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA CONTROLLER IDM11763
MINE PORTFOLIO
81 of 81 mines and facilities
2025-01-01 – 2026-10-18. All statuses records; production reporting is not required.
Material, method and type filters apply to this table. The portfolio’s status applies to the entire page. GEM fields describe their own release, not the selected MSHA year.
| Mine | Location / type | Coal · short tons | Hours worked | Violations | Accident records | On-site inspection hours |
|---|---|---|---|---|---|---|
| Barbour County Mines0101565 · Active6/8 quarters reported | Barbour, ALSurface · MSHA: Clay, Ceramic, Refractory Mnls. | 0 | 5,576 | 0 | 0 | 11.8 |
| Battleground Mill3100381 · Active6/8 quarters reported | Cleveland, NCSurface · MSHA: Mica | 0 | 9,552 | 6 | 0 | 25.3 |
| Chesapeake Plant4405046 · Active6/8 quarters reported | Chesapeake (City), VAFacility · MSHA: Cement | 0 | 387,958 | 3 | 2 | 114.0 |
| Crenshaw Mine and Plant2200032 · Active6/8 quarters reported | Panola, MSSurface · MSHA: Kaolin and Ball Clay | 0 | 55,976 | 4 | 0 | 52.5 |
| Fernley Plant2600816 · Active6/8 quarters reported | Lyon, NVSurface · MSHA: Diatomaceous Earth (Diatomite) | 0 | 55,956 | 0 | 1 | 18.3 |
| Gleason Mills and Mines4001052 · Active6/8 quarters reported | Weakley, TNSurface · MSHA: Common Clays NEC | 0 | 149,475 | 32 | 1 | 93.3 |
| Imerys Chatsworth Operations0901094 · Active6/8 quarters reported | Murray, GAFacility · MSHA: Crushed, Broken Marble | 0 | 77,608 | 9 | 0 | 89.0 |
| Imerys Cisco Mine0901101 · Active6/8 quarters reported | Murray, GAUnderground · MSHA: Crushed, Broken Limestone NEC | 0 | 28,722 | 11 | 1 | 158.3 |
| Imerys Lompoc Plant0402848 · Active6/8 quarters reported | Santa Barbara, CASurface · MSHA: Diatomaceous Earth (Diatomite) | 0 | 601,882 | 99 | 3 | 271.3 |
| IMERYS SYLACAUGA OPERATIONS0100011 · Active6/8 quarters reported | Talladega, ALSurface · MSHA: Crushed, Broken Marble | 0 | 854,040 | 27 | 2 | 209.3 |
| Kentucky-Tennessee Clay Company0900121 · Active6/8 quarters reported | Washington, GASurface · MSHA: Common Clays NEC | 0 | 81,776 | 15 | 1 | 68.5 |
| K-T Clay Company3800052 · Active6/8 quarters reported | Aiken, SCSurface · MSHA: Common Clays NEC | 0 | 100,048 | 34 | 3 | 120.8 |
| MACON COUNTY MINES0900340 · Active6/8 quarters reported | Macon, GASurface · MSHA: Common Clays NEC | 0 | 51,982 | 2 | 0 | 38.0 |
| Moss Mill & Mines3100273 · Active6/8 quarters reported | Cleveland, NCSurface · MSHA: Mica | 0 | 30,311 | 3 | 0 | 52.0 |
| MULCOA PLANT #10900339 · Active6/8 quarters reported | Sumter, GAFacility · MSHA: Common Clays NEC | 0 | 154,042 | 4 | 1 | 65.3 |
| MULCOA PLANT NO 20900188 · Active6/8 quarters reported | Sumter, GAFacility · MSHA: Common Clays NEC | 0 | 358,736 | 28 | 0 | 202.3 |
| New York Mine0900030 · Active6/8 quarters reported | Pickens, GAUnderground · MSHA: Crushed, Broken Marble | 0 | 349,909 | 57 | 1 | 429.5 |
| No Agua Mine & Mill2900248 · Intermittent6/8 quarters reported | Taos, NMSurface · MSHA: Perlite | 0 | 83,323 | 10 | 4 | 29.3 |
| OAK HILL MINE3003338 · Intermittent6/8 quarters reported | Essex, NYSurface · MSHA: Wollastonite | 0 | 12,877 | 0 | 0 | 11.0 |
| Patterson Mine and Mill3100274 · Active6/8 quarters reported | Cleveland, NCFacility · MSHA: Mica | 0 | 15,357 | 6 | 2 | 39.5 |
| Quincy WA Mine4503480 · Active6/8 quarters reported | Grant, WASurface · MSHA: Diatomaceous Earth (Diatomite) | 0 | 33,623 | 1 | 1 | 31.0 |
| Quincy WA Plant4500939 · Active6/8 quarters reported | Grant, WASurface · MSHA: Misc. Nonmetallic Mnls. NEC | 0 | 111,066 | 29 | 3 | 79.8 |
| Sandersville Calcine Plant0900111 · Active6/8 quarters reported | Washington, GAFacility · MSHA: Kaolin and Ball Clay | 0 | 176,234 | 19 | 1 | 106.5 |
| Sandersville Land and Mines0900705 · Active6/8 quarters reported | Washington, GASurface · MSHA: Kaolin and Ball Clay | 0 | 36,568 | 1 | 0 | 28.3 |
| Sims Mine1504512 · Intermittent6/8 quarters reported | Carlisle, KYSurface · MSHA: Clay, Ceramic, Refractory Mnls. | 0 | 1,331 | 1 | 0 | 21.8 |
| Superior Pit & Mill0201136 · Active6/8 quarters reported | Pinal, AZSurface · MSHA: Perlite | 0 | 20,301 | 3 | 0 | 12.5 |
| Tucker Hill Mill3503433 · Active6/8 quarters reported | Lake, ORFacility · MSHA: Perlite | 0 | 38,532 | 12 | 0 | 26.0 |
| TUCKER HILL QUARRY3503432 · Active6/8 quarters reported | Lake, ORSurface · MSHA: Perlite | 0 | 14,068 | 11 | 0 | 32.8 |
| Whitestone Mine #40900047 · Active6/8 quarters reported | Pickens, GAUnderground · MSHA: Crushed, Broken Marble | 0 | 183,630 | 9 | 4 | 314.3 |
| WILLSBORO MINE (FOX KNOLL)3000644 · Active6/8 quarters reported | Essex, NYSurface · MSHA: Wollastonite | 0 | 121,090 | 125 | 4 | 240.5 |
| Alberene Stone Div Of Qry #4402811 · Abandoned | Albemarle, VASurface · MSHA: Talc | — | — | 0 | 0 | — |
| Alder Plant2400164 · Abandoned | Madison, MTFacility · MSHA: Talc | — | — | 0 | 0 | — |
| ALPINE MILL0100433 · Abandoned | Talladega, ALSurface · MSHA: Talc | — | — | 0 | 0 | — |
| AMERICAN MINERALS INC2901582 · Abandoned | Luna, NMFacility · MSHA: Manganese Ore | — | — | 0 | 0 | — |
| Antonito Plant0501883 · Abandoned | Conejos, COSurface · MSHA: Perlite | — | — | 0 | 0 | — |
| Baltimore South Mine1800342 · Abandoned | Baltimore, MDUnderground · MSHA: Crushed, Broken Limestone NEC | — | — | 3 | 0 | 16.3 |
| Beaverhead Mine2400161 · Abandoned | Madison, MTSurface · MSHA: Talc | — | — | 0 | 0 | — |
| BEAVERHEAD MINE2401822 · Abandoned | Madison, MTUnderground · MSHA: Talc | — | — | 0 | 0 | — |
| Black Springs Mine4202215 · Abandoned | Beaver, UTSurface · MSHA: Perlite | — | — | 0 | 0 | — |
| CALCIUM CARBONATE PLANT/MILL1800343 · Abandoned | Baltimore, MDFacility · MSHA: Crushed, Broken Limestone NEC | — | — | 0 | 0 | — |
| CANFIELD MILL3304364 · Abandoned | Mahoning, OHFacility · MSHA: Talc | — | — | 0 | 0 | — |
| Carroll County Mines4001045 · Abandoned | Carroll, TNSurface · MSHA: Clay, Ceramic, Refractory Mnls. | — | — | 0 | 0 | — |
| CHESTER MILL4300149 · Abandoned | Windsor, VTSurface · MSHA: Talc | — | — | 0 | 0 | — |
| Dalton Plant0900804 · Abandoned | Whitfield, GAFacility · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| Dry Branch Mine0900139 · Abandoned | Twiggs, GASurface · MSHA: Kaolin and Ball Clay | — | — | 0 | 0 | — |
| Dry Branch Plant0900482 · Abandoned | Twiggs, GAFacility · MSHA: Kaolin and Ball Clay | — | — | 0 | 0 | — |
| Feldspar Corp-Siloam Washing Plant0900919 · Abandoned | Greene, GASurface · MSHA: Feldspar | — | — | 0 | 0 | — |
| GEORGIA MARBLE COMPANY0201201 · Abandoned | Pima, AZSurface · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| Georgia Marble Company Of Arizona-Plant0201200 · Abandoned | Pima, AZFacility · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| Gibson County Mine4001081 · Abandoned | Gibson, TNSurface · MSHA: Common Clays NEC | — | — | 0 | 0 | — |
| Gleason Mines4001046 · Abandoned | Weakley, TNSurface · MSHA: Clay, Ceramic, Refractory Mnls. | — | — | 0 | 0 | — |
| GRAND ISLAND MILL2500076 · Abandoned | Hall, NEFacility · MSHA: Talc | — | — | 0 | 0 | — |
| Graves County Mines1504511 · Abandoned | Graves, KYSurface · MSHA: Clay, Ceramic, Refractory Mnls. | — | — | 0 | 0 | — |
| Hamm Mine4300365 · Abandoned | Windham, VTSurface · MSHA: Talc | — | — | 0 | 0 | — |
| Henry County Mines0102122 · Abandoned | Henry, ALSurface · MSHA: Clay, Ceramic, Refractory Mnls. | — | — | 0 | 0 | — |
| Henry County Mines4000883 · Abandoned | Henry, TNSurface · MSHA: Common Clays NEC | — | — | 0 | 0 | — |
| Imerys Ellijay Marble Hill Mine0901038 · Abandoned | Gilmer, GAUnderground · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| Imerys Marble Incorporated4800026 · Abandoned | Platte, WYSurface · MSHA: Dimension Marble | — | — | 0 | 0 | — |
| Imerys Marble Incorporated4800533 · Abandoned | Platte, WYFacility · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| JEFFERSONVILLE PLANT0900354 · Abandoned | Twiggs, GASurface · MSHA: Common Clays NEC | — | — | 0 | 0 | — |
| Johnson Mill4300374 · Abandoned | Lamoille, VTFacility · MSHA: Talc | — | — | 0 | 0 | — |
| Kennesaw Mine0901050 · Abandoned | Pickens, GAUnderground · MSHA: Dimension Marble | — | — | 0 | 0 | — |
| Kolberg Crusher/Wash Plant2402017 · Abandoned | Madison, MTSurface · MSHA: Crushed, Broken Stone NEC | — | — | 0 | 0 | — |
| Lewis Mine3002299 · Abandoned | Essex, NYSurface · MSHA: Wollastonite | — | — | 0 | 0 | — |
| LUDLOW MILL4300276 · Abandoned | Windsor, VTFacility · MSHA: Talc | — | — | 0 | 0 | — |
| LUDLOW SHIPPING CENTER4300357 · Abandoned | Windsor, VTFacility · MSHA: Talc | — | — | 0 | 0 | — |
| Marble Hill Plants0900577 · Abandoned | Pickens, GAFacility · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| MILL NO. 3, WHITESTONE DIV.0900576 · Abandoned | Gilmer, GAFacility · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| Mine No 2 Whitestone Division0900324 · Abandoned | Gilmer, GAUnderground · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| Mine No 3 (Whitestone Div)0900877 · Abandoned | Pickens, GAUnderground · MSHA: Crushed, Broken Limestone NEC | — | — | 0 | 0 | — |
| Mine No 50900089 · Abandoned | Pickens, GAUnderground · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| Mine No 6 (Whitestone Div)0900031 · Abandoned | Pickens, GAUnderground · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| Mp Mine2401945 · Abandoned | Madison, MTSurface · MSHA: Talc | — | — | 0 | 0 | — |
| Rooker Mine2200728 · Abandoned | Benton, MSSurface · MSHA: Kaolin and Ball Clay | — | — | 0 | 0 | — |
| Rush Tower Mine & Mill (Marble Products2300130 · Abandoned | Jefferson, MOUnderground · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
| The Feldspar Corporation-Main Plant0900091 · Abandoned | Jasper, GAFacility · MSHA: Feldspar | — | — | 0 | 0 | — |
| Troy Mine4300410 · Abandoned | Orleans, VTSurface · MSHA: Talc | — | — | 0 | 0 | — |
| WEST WINDSOR MILL4300333 · Abandoned | Windsor, VTFacility · MSHA: Talc | — | — | 0 | 0 | — |
| Whitestone-Mill #10900323 · Abandoned | Gilmer, GAFacility · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Whitestone Mine #10900027 · Abandoned | Gilmer, GAUnderground · MSHA: Lime | — | — | 0 | 0 | — |
| Whitestone Plants0900707 · Abandoned | Pickens, GAFacility · MSHA: Crushed, Broken Marble | — | — | 0 | 0 | — |
Production and hours sum available quarterly reports. — means unavailable; zero safety records means none in the selected imported period. Ownership reflects the current MSHA record.
LOCATION
Portfolio map
51 of 81 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Barbour County Mines31.78944, -85.24667Open map ↗
- Battleground Mill35.21972, -81.36889Open map ↗
- Chesapeake Plant36.81417, -76.28722Open map ↗
- Crenshaw Mine and Plant34.45333, -90.20472Open map ↗
- Fernley Plant39.60889, -119.25000Open map ↗
- Gleason Mills and Mines36.19972, -88.59417Open map ↗
- Imerys Chatsworth Operations34.76722, -84.76528Open map ↗
- Imerys Cisco Mine34.96722, -84.66583Open map ↗
- Imerys Lompoc Plant34.60889, -120.46417Open map ↗
- IMERYS SYLACAUGA OPERATIONS33.16194, -86.29806Open map ↗
- Kentucky-Tennessee Clay Company33.01583, -82.94306Open map ↗
- K-T Clay Company33.49806, -81.84056Open map ↗
- MACON COUNTY MINES32.19611, -84.14000Open map ↗
- Moss Mill & Mines35.21472, -81.37694Open map ↗
- MULCOA PLANT #132.19611, -84.14000Open map ↗
- MULCOA PLANT NO 232.19611, -84.14000Open map ↗
- New York Mine34.43472, -84.34972Open map ↗
- No Agua Mine & Mill36.76083, -105.95750Open map ↗
- OAK HILL MINE44.30000, -73.56333Open map ↗
- Patterson Mine and Mill35.25861, -81.34694Open map ↗
- Quincy WA Mine47.08000, -119.87583Open map ↗
- Quincy WA Plant47.24139, -119.83778Open map ↗
- Sandersville Calcine Plant32.96611, -82.82000Open map ↗
- Sandersville Land and Mines33.02444, -82.97278Open map ↗
- Sims Mine36.82694, -88.92722Open map ↗
- Superior Pit & Mill33.28750, -111.12361Open map ↗
- Tucker Hill Mill42.21056, -120.35944Open map ↗
- TUCKER HILL QUARRY42.58472, -120.44806Open map ↗
- Whitestone Mine #434.50917, -84.50500Open map ↗
- WILLSBORO MINE (FOX KNOLL)44.35861, -73.40361Open map ↗
- Antonito Plant37.05468, -106.00863Open map ↗
- Baltimore South Mine39.46639, -76.64778Open map ↗
- Black Springs Mine38.36528, -113.32333Open map ↗
- CALCIUM CARBONATE PLANT/MILL39.46389, -76.64389Open map ↗
- Dalton Plant34.71317, -84.97461Open map ↗
- Dry Branch Mine32.80061, -83.46572Open map ↗
- Dry Branch Plant32.80061, -83.46572Open map ↗
- Feldspar Corp-Siloam Washing Plant33.53861, -83.16222Open map ↗
- Gibson County Mine36.06479, -88.80368Open map ↗
- Gleason Mines36.21050, -88.65585Open map ↗
- Graves County Mines36.83389, -88.92667Open map ↗
- Imerys Ellijay Marble Hill Mine34.64361, -84.50250Open map ↗
- Imerys Marble Incorporated42.08186, -105.15421Open map ↗
- Imerys Marble Incorporated42.06683, -104.95027Open map ↗
- Lewis Mine44.29667, -73.60500Open map ↗
- Marble Hill Plants34.43472, -84.35000Open map ↗
- Rooker Mine34.64329, -89.18278Open map ↗
- The Feldspar Corporation-Main Plant33.25028, -83.68694Open map ↗
- WEST WINDSOR MILL43.46917, -72.52889Open map ↗
- Whitestone Mine #134.50917, -84.50500Open map ↗
- Whitestone Plants34.50917, -84.50500Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 81 mines listed under this controller were checked; 30 have reports in the available quarters. Totals use current ownership.
Hours worked
4,201,549reported employee hours
Tons per hour
0.00production ÷ hours worked
Missing values appear as —. Totals use available reports. Tons per hour requires production and hours for the same quarters and a nonzero hours total. * Striped bars mark partial mine coverage or an incomplete quarter. See the table for coverage.
Quarterly data and reporting coverage
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | 0 | 674,609 | 0.00 | 1,339 | 30/30 mines reporting |
| 2025 Q2 | 0 | 731,086 | 0.00 | 1,354 | 30/30 mines reporting |
| 2025 Q3 | 0 | 727,854 | 0.00 | 1,329 | 30/30 mines reporting |
| 2025 Q4 | 0 | 685,926 | 0.00 | 1,338 | 30/30 mines reporting |
| 2026 Q1 | 0 | 707,445 | 0.00 | 1,318 | 30/30 mines reporting |
| 2026 Q2 | 0 | 674,629 | 0.00 | 1,298 | 30/30 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
564112 significant & substantial (S&S)
Accident records
350 records classified as fatality
Proposed penalties · USD
459,687.00537 of 564 violations with amounts
On-site inspection hours
3,008.25180 inspections · 180 with hours
Counts are published records, including contractor records. * The quarter was incomplete at the snapshot date; recent counts may rise as reports arrive. — means no reported amount or hours. Portfolio totals use current membership.
Quarterly safety data
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 102 | 24 | 50,624.00 | 6 | 0 | 30 | 335.0 |
| 2025-Q2 | 73 | 15 | 139,236.00 | 1 | 0 | 28 | 428.0 |
| 2025-Q3 | 62 | 8 | 53,222.00 | 3 | 0 | 23 | 363.3 |
| 2025-Q4 | 43 | 6 | 20,487.00 | 8 | 0 | 14 | 288.5 |
| 2026-Q1 | 109 | 30 | 91,159.00 | 6 | 0 | 31 | 610.0 |
| 2026-Q2 | 106 | 17 | 95,173.00 | 5 | 0 | 21 | 488.0 |
| 2026-Q3 | 49 | 8 | 9,786.00 | 6 | 0 | 26 | 356.3 |
| 2026-Q4 * | 20 | 4 | — | 0 | 0 | 7 | 139.3 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Imerys Cisco Mine · 0901101
57.14100(b) · $151.00 proposed
- Gleason Mills and Mines · 4001052
47.41(a) · $465.00 proposed
- Gleason Mills and Mines · 4001052
56.12032 · S&S · $7,676.00 proposed
- Gleason Mills and Mines · 4001052
56.20003(a) · S&S · $2,312.00 proposed
- Gleason Mills and Mines · 4001052
56.20013 · $465.00 proposed
- Gleason Mills and Mines · 4001052
56.11002 · S&S · $2,312.00 proposed
- New York Mine · 0900030
Regular Safety and Health Inspection · 56.0 on-site hours
- Imerys Cisco Mine · 0901101
Regular Safety and Health Inspection · 36.3 on-site hours
- Gleason Mills and Mines · 4001052
Regular Safety and Health Inspection · 18.3 on-site hours
- Whitestone Mine #4 · 0900047
Regular Safety and Health Inspection · 39.0 on-site hours
- Quincy WA Plant · 4500939
MACHINERY · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Worker was welding in shop. They removed their welding hood after completing a weld and the slag popped and sent material into their eye. The material had to be removed by medical professionals and they were prescribed antibiotic and steroidal eye drops.
- Imerys Lompoc Plant · 0402848
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Bilateral pain in hands & wrists; experienced initial pain while hand stacking 10kg bags at the Celpure plant.
- Fernley Plant · 2600816
Regular Safety and Health Inspection · 3.5 on-site hours
- Chesapeake Plant · 4405046
OTHER · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
The Injured Person (IP) was cleaning out the Roto-packer and bent over to cut a partially empty 50 lbs bag to discard remaining contents, and as the IP bent over, EE felt a pop in EE's lower back (left), and the IP had to take a minute before standing up straight. IP reported the incident to the Lead Operator. IP was taken to Urgent Care.
- Sandersville Calcine Plant · 0900111
Regular Safety and Health Inspection · 15.5 on-site hours
- Whitestone Mine #4 · 0900047
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
A manual slide gate closed too quickly on a miners right hand. The impact caused a fracture and a laceration requiring 8 stitches.
- OAK HILL MINE · 3003338
Regular Safety and Health Inspection · 3.5 on-site hours
- Sandersville Land and Mines · 0900705
Spot Inspection · 10.8 on-site hours
- K-T Clay Company · 3800052
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Injured Person was replacing the classifier bearing assembly. The assembly became lodged due to alignment. The injured employee had hands underneath the assembly, attempting to correct the alignment. Subsequently, the assembly dislodged and fell onto the injured employee's hands. This incident resulted in a broken ring finger and lacerations to the ring and index fingers.
- Superior Pit & Mill · 0201136
56.23003(b) · $151.00 proposed
- IMERYS SYLACAUGA OPERATIONS · 0100011
Spot Inspection · 15.3 on-site hours
- WILLSBORO MINE (FOX KNOLL) · 3000644
56.12028 · $755.00 proposed
- Superior Pit & Mill · 0201136
Regular Safety and Health Inspection · 4.3 on-site hours
- Superior Pit & Mill · 0201136
56.12028 · $151.00 proposed
- WILLSBORO MINE (FOX KNOLL) · 3000644
56.14107(a) · $288.00 proposed
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.
Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.
Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.
S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.
Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.
Portfolio totals use current mine membership, including events before the current owner or operator's tenure.
CFR headings link to the current Title 30 index; they are not historical legal determinations.
SELECTED PORTFOLIO
17 linked operators.
Relationships reflect the selected mine status and current MSHA controller/operator fields.